Question

One small box on the ECG paper indicates:

A) 0.20 seconds
B) 0.04 seconds
C) 2 seconds
D) 4 seconds

Answer 1

Each small box on ECG paper represents 0.04 seconds, which is essential for analyzing the detailed electrical activity of the heart.

Step-by-step explanation:

One small box on the ECG paper indicates 0.04 seconds. Electrocardiogram (ECG) paper speed is standardized, such that each small box on the grid represents 0.04 seconds of time. This measurement is critical to accurately assess the electrical activity of the heart over time. Understanding this will help you interpret heart rates, rhythms, and diagnose various heart conditions based on the ECG tracings. These tiny increments are essential when analyzing the precise timings of the electrical events in the heart cycle.